Question

您好，我正在将Automapper与Db IQueryable一起用于导航属性计算返回错误数据。

自动映射器映射

mp.CreateMap< OrderHistoryEntity, OrderHistory >();

mp.CreateMap< OrderEntity, Order >()
   .ForMember(dest => dest.OrderHistory, 
              opt => opt.MapFrom(src => src.OrderHistoryEntities));

实体代码

Public Class OrderEntity
{
      public OrderHistoryEntity OrderHistoryEntities{get;set;}
}

Public Class Order
{
      public OrderHistory OrderHistories{get;set;}
}

方法

public IQueryable<OrderEntity> GetByPeriod(int orderId, params Expression<Func<OrderEntity, object>>[] includes)
        {
            IQueryable<OrderEntity> query = DbSet;
            if (includes != null)
            {
                query = includes.Aggregate(query, (current, include) => current.Include(include));
            }
            return query.Where(m => m.Id == orderId);
        }

Public void GetOrders(int orderId)
{
     var records=GetByPeriod(orderId,m => m.OrderEntities)
     _mapper.Map<List<Order>>(records);
}

Public void GetProperOrders(int orderId)
{
     var records=GetByPeriod(orderId,m => m.OrderEntities)
     _mapper.Map<List<Order>>(records.toList());
}

对于GetOrders，结果将为OrderEntities（Count和Data）错误对于GetProperOrders，结果将为OrderEntities（计数和数据）正确

具有IQueryable的Automaper

0 个答案: